Beam the stringer can be bolted or welded.
Steel stringer beam staircase details.
Though the treads may be supported many other ways.
Stringer can vary in section 1 8 1 12 1 1 2 1 8.
The sup porting beams are usually.
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There are typically two stringers one on either side of the stairs.
Supporting beam the supporting beam supports the stringer or the dog leg if it exists.
A rail fixed parallel above the pitch line at the sides of a stair.
It combines the steel i beam with a simple steel plate riser wedges and tread plates with the wood steps.
If attached to a dog leg the stringer will be welded.
They must be field welded with 1 8 welds similar to detail welds below.
Stringer or string the structural member that supports the treads.
Stringer to steel platform or embedded steel at floor level landings.
Each stringer can be independently supported.
Center square beam 100 200 6 100 150 5mm.
The stringers are notched so that the risers and treads fit into them.